Lithium (Li) is a chemical element belonging to the category Alkali metal, with atomic number 3 and atomic mass 6.9400 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Lithium
- Symbol: Li
- Atomic number: 3
- Atomic mass: 6.9400 u
Position in the periodic table
- Group: 1
- Period: 2
- Category: Alkali metal
Physico-chemical properties
- Standard state: Solid
- Melting point: 180.5°C
- Boiling point: 1342°C
- Density: 0.534 g/cm³
- Electron configuration: 1s² 2s¹
Scientific description
Lithium is a chemical element with symbol Li and atomic number 3. It belongs to the category of Alkali metal and occupies group 1 and period 2. Its standard atomic mass is 6.9400 u.